login: panic: mtx_unlock() of destroyed mutex @ /syzkaller/managers/i386/kernel/sys/kern/sys_socket.c:319
cpuid = 1
time = 1579288837
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe00244dd7a0
vpanic() at vpanic+0x1ce/frame 0xfffffe00244dd810
panic() at panic+0x43/frame 0xfffffe00244dd870
__mtx_unlock_flags() at __mtx_unlock_flags+0x1ac/frame 0xfffffe00244dd8b0
soo_stat() at soo_stat+0x17c/frame 0xfffffe00244dd8f0
kern_fstat() at kern_fstat+0xed/frame 0xfffffe00244dd940
freebsd11_freebsd32_fstat() at freebsd11_freebsd32_fstat+0x2d/frame 0xfffffe00244ddab0
ia32_syscall() at ia32_syscall+0x48c/frame 0xfffffe00244ddbf0
int0x80_syscall_common() at int0x80_syscall_common+0x9c/frame 0x814269f
KDB: enter: panic
[ thread pid 844 tid 100189 ]
Stopped at kdb_enter+0x67: movq $0,0x1467376(%rip)
db>
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs 0x20
ds 0x3b ll+0x1a
es 0x3b ll+0x1a
fs 0x13
gs 0x1b
ss 0
rax 0x12
rcx 0x80 ll+0x5f
rdx 0xffffffff818ed59d
rbx 0
rsp 0xfffffe00244dd780
rbp 0xfffffe00244dd7a0
rsi 0x1
rdi 0
r8 0
r9 0xffffffff
r10 0
r11 0xfffff8003aa8c4f0
r12 0xffffffff82068d90 ddb_dbbe
r13 0
r14 0xffffffff819350cb
r15 0xffffffff819350cb
rip 0xffffffff810aed27 kdb_enter+0x67
rflags 0x200082 kernphys+0x82
kdb_enter+0x67: movq $0,0x1467376(%rip)
db> show proc
Process 844 (syz-executor.0) at 0xfffff8003aaf2530:
state: NORMAL
uid: 0 gids: 0, 0, 5
parent: pid 773 at 0xfffff8003a49aa60
ABI: FreeBSD ELF32
arguments: /root/syz-executor.0
reaper: 0xfffff800032fa530 reapsubtree: 1
sigparent: 20
vmspace: 0xfffff80003e23000
(map 0xfffff80003e23000)
(map.pmap 0xfffff80003e230c0)
(pmap 0xfffff80003e23120)
threads: 3
100144 RunQ syz-executor.0
100188 Run CPU 0 syz-executor.0
100189 Run CPU 1 syz-executor.0
db> ps
pid ppid pgrp uid state wmesg wchan cmd
844 773 773 0 R (threaded) syz-executor.0
100144 RunQ syz-executor.0
100188 Run CPU 0 syz-executor.0
100189 Run CPU 1 syz-executor.0
814 801 814 0 Ss select 0xfffff80003cdfa40 dhclient
806 1 806 0 Ss select 0xfffff80003cdf940 dhclient
801 788 422 65 S select 0xfffff80003cdfcc0 dhclient
788 422 422 0 S wait 0xfffff80003544000 sh
773 771 773 0 Ss nanslp 0xffffffff824feca0 syz-executor.0
771 769 769 0 S (threaded) syz-execprog
100087 S uwait 0xfffff80003a49180 syz-execprog
100103 S uwait 0xfffff80003e0b380 syz-execprog
100104 S uwait 0xfffff80003e0b480 syz-execprog
100105 S uwait 0xfffff80003e0b580 syz-execprog
100106 S uwait 0xfffff80003e0b680 syz-execprog
100107 S uwait 0xfffff80003e0bc00 syz-execprog
100108 S kqread 0xfffff8000333b900 syz-execprog
100109 S uwait 0xfffff80003daef00 syz-execprog
100110 S uwait 0xfffff80003e0b080 syz-execprog
769 767 769 0 Ss pause 0xfffff8003a4a30a8 csh
767 680 767 0 Ss select 0xfffff80003cdfc40 sshd
746 1 746 0 Ss+ ttyin 0xfffff800033f7cb0 getty
745 1 745 0 Ss+ ttyin 0xfffff800033f8cb0 getty
744 1 744 0 Ss+ ttyin 0xfffff80003aba0b0 getty
743 1 743 0 Ss+ ttyin 0xfffff80003aba4b0 getty
742 1 742 0 Ss+ ttyin 0xfffff80003aba8b0 getty
741 1 741 0 Ss+ ttyin 0xfffff80003abacb0 getty
740 1 740 0 Ss+ ttyin 0xfffff80003abb0b0 getty
739 1 739 0 Ss+ ttyin 0xfffff80003abb4b0 getty
738 1 738 0 Ss+ ttyin 0xfffff80003abb8b0 getty
736 1 22 0 S+ piperd 0xfffff80003d888e8 logger
735 734 22 0 S+ nanslp 0xffffffff824feca0 sleep
734 1 22 0 S+ wait 0xfffff8003a4a3530 sh
684 1 684 0 Ss nanslp 0xffffffff824feca1 cron
680 1 680 0 Ss select 0xfffff80003d25d40 sshd
493 1 493 0 Ss select 0xfffff80003cdfd40 syslogd
422 1 422 0 Ss wait 0xfffff80003dea530 devd
421 1 421 65 Ss select 0xfffff80003d25dc0 dhclient
336 1 336 0 Ss select 0xfffff80003cf56c0 dhclient
333 1 333 0 Ss select 0xfffff80003d25f40 dhclient
21 0 0 0 DL syncer 0xffffffff825d5118 [syncer]
20 0 0 0 DL vlruwt 0xfffff80003b01000 [vnlru]
19 0 0 0 DL (threaded) [bufdaemon]
100065 D qsleep 0xffffffff825d4618 [bufdaemon]
100070 D - 0xffffffff8200a980 [bufspacedaemon-0]
100080 D sdflush 0xfffff80003d008e8 [/ worker]
18 0 0 0 DL psleep 0xffffffff825f0088 [vmdaemon]
17 0 0 0 DL (threaded) [pagedaemon]
100063 D psleep 0xffffffff8261cfd8 [dom0]
100068 D launds 0xffffffff8261cfe4 [laundry: dom0]
100069 D umarcl 0xffffffff8153bf50 [uma]
16 0 0 0 DL - 0xffffffff82359530 [rand_harvestq]
15 0 0 0 DL waiting 0xffffffff826625a0 [sctp_iterator]
9 0 0 0 DL - 0xffffffff825d401c [soaiod4]
8 0 0 0 DL - 0xffffffff825d401c [soaiod3]
7 0 0 0 DL - 0xffffffff825d401c [soaiod2]
6 0 0 0 DL - 0xffffffff825d401c [soaiod1]
5 0 0 0 DL (threaded) [cam]
100031 D - 0xffffffff82234940 [doneq0]
100062 D - 0xffffffff82234808 [scanner]
4 0 0 0 DL crypto_ 0xfffff800031f8e90 [crypto returns 1]
3 0 0 0 DL crypto_ 0xfffff800031f8e30 [crypto returns 0]
2 0 0 0 DL crypto_ 0xffffffff825ea0f8 [crypto]
14 0 0 0 DL seqstat 0xfffff80003362888 [sequencer 00]
13 0 0 0 DL (threaded) [geom]
100022 D - 0xffffffff8261b608 [g_event]
100023 D - 0xffffffff8261b618 [g_up]
100024 D - 0xffffffff8261b610 [g_down]
12 0 0 0 WL (threaded) [intr]
100006 I [swi5: fast taskq]
100010 I [swi6: task queue]
100011 I [swi6: Giant taskq]
100017 I [swi3: vm]
100018 I [swi4: clock (0)]
100019 I [swi4: clock (1)]
100020 I [swi1: netisr 0]
100032 I [irq24: virtio_pci0]
100033 I [irq25: virtio_pci0]
100034 I [irq26: virtio_pci0]
100035 I [irq27: virtio_pci0]
100036 I [irq28: virtio_pci1]
100037 I [irq29: virtio_pci1]
100038 I [irq30: virtio_pci1]
100039 I [irq31: virtio_pci1]
100040 I [irq32: virtio_pci1]
100045 I [irq10: virtio_pci2]
100047 I [irq1: atkbd0]
100048 I [irq12: psm0]
100049 I [swi0: uart uart++]
11 0 0 0 RL (threaded) [idle]
100003 CanRun [idle: cpu0]
100004 CanRun [idle: cpu1]
1 0 1 0 SLs wait 0xfffff800032fa530 [init]
10 0 0 0 DL audit_w 0xffffffff82663230 [audit]
0 0 0 0 DLs (threaded) [kernel]
100000 D swapin 0xffffffff82609bf8 [swapper]
100005 D - 0xfffff8000333d000 [thread taskq]
100007 D - 0xfffff8000333cd00 [kqueue_ctx taskq]
100008 D - 0xfffff8000333cc00 [config_0]
100009 D - 0xfffff8000333cb00 [aiod_kick taskq]
100012 D - 0xfffff8000333c800 [if_config_tqg_0]
100013 D - 0xfffff8000333c700 [if_io_tqg_0]
100014 D - 0xfffff8000333c600 [if_io_tqg_1]
100015 D - 0xfffff8000333c500 [softirq_0]
100016 D - 0xfffff8000333c400 [softirq_1]
100021 D - 0xfffff8000333c300 [firmware taskq]
100026 D - 0xfffff8000333c200 [crypto_0]
100027 D - 0xfffff8000333c200 [crypto_1]
100041 D - 0xfffff8000333c000 [vtnet0 rxq 0]
100042 D - 0xfffff8000333be00 [vtnet0 txq 0]
100043 D - 0xfffff8000333bd00 [vtnet0 rxq 1]
100044 D - 0xfffff8000333bc00 [vtnet0 txq 1]
100046 D vtbslp 0xfffff800034d4400 [virtio_balloon]
100050 D - 0xfffff8000333bb00 [mca taskq]
100055 D - 0xffffffff81cd8ac1 [deadlkres]
100057 D - 0xfffff80003b31100 [acpi_task_0]
100058 D - 0xfffff80003b31100 [acpi_task_1]
100059 D - 0xfffff80003b31100 [acpi_task_2]
100061 D - 0xfffff8000333c100 [CAM taskq]
db> show all locks
Process 844 (syz-executor.0) thread 0xfffff8003aa8c000 (100189)
exclusive spin mutex (null) r = 0 (0xfffff80003e89968) locked @ /syzkaller/managers/i386/kernel/sys/kern/sys_socket.c:316
db> show malloc
Type InUse MemUse Requests
devbuf 4213 4851K 4238
vtbuf 24 1968K 46
sysctloid 26527 1553K 26591
kobj 331 1324K 487
newblk 370 1117K 453
vfscache 4 1025K 4
inodedep 85 554K 121
pcb 26 541K 250
ufs_quota 1 512K 1
vfs_hash 1 512K 1
callout 2 512K 2
intr 4 388K 4
subproc 114 232K 909
acpica 1674 185K 49750
vnet_data 1 168K 1
pagedep 17 132K 64
tfo_ccache 1 128K 1
sem 4 106K 4
DEVFS1 102 102K 113
linker 221 89K 243
bus 962 78K 3306
mtx_pool 2 72K 2
syncache 1 68K 1
acpitask 1 64K 1
ddb_capture 1 64K 1
module 493 62K 493
filedesc 5 37K 101
BPF 19 36K 19
gtaskqueue 22 34K 22
umtx 260 33K 260
hostcache 1 32K 1
shm 1 32K 1
kdtrace 160 31K 1822
DEVFS3 121 31K 131
msg 4 30K 4
DEVFS_RULE 56 27K 56
kbdmux 6 22K 6
vmem 3 19K 4
temp 22 17K 1663
ufs_mount 3 17K 4
proc 3 17K 3
tty 16 16K 16
tidhash 1 16K 1
ifaddr 41 16K 43
ithread 89 15K 89
bus-sc 30 14K 1394
KTRACE 100 13K 100
kenv 95 12K 99
eventhandler 123 11K 123
pfs_nodes 20 10K 20
GEOM 60 10K 487
rman 82 10K 423
bmsafemap 3 9K 89
devstat 4 9K 4
UART 12 9K 12
rpc 2 8K 2
shmfd 1 8K 1
pfs_vncache 1 8K 1
dirrem 59 8K 70
audit_evclass 231 8K 289
lltable 20 7K 20
cred 28 7K 240
ifnet 4 7K 4
CAM DEV 3 6K 508
ether_multi 73 6K 78
vt 11 6K 11
kqueue 52 6K 849
freefile 42 6K 51
sglist 5 6K 5
CAM queue 5 6K 1522
in6_multi 41 5K 41
routetbl 37 5K 41
plimit 19 5K 344
ufs_dirhash 24 5K 24
taskqueue 42 5K 42
memdesc 1 4K 1
MCA 32 4K 32
diradd 32 4K 86
evdev 4 4K 4
UMA 234 4K 234
hhook 13 4K 13
session 23 3K 34
pgrp 23 3K 34
acpisem 22 3K 22
terminal 11 3K 11
uidinfo 4 3K 4
proc-args 44 3K 509
select 18 3K 18
local_apic 1 2K 1
io_apic 1 2K 1
ipsec-saq 2 2K 2
lockf 19 2K 29
CAM XPT 22 2K 541
Unitno 25 2K 39
ip6ndp 8 2K 9
acpidev 20 2K 20
crypto 2 2K 2
msi 9 2K 9
mkdir 9 2K 106
indirdep 4 1K 4
ipsecpolicy 1 1K 1
sahead 1 1K 1
secasvar 1 1K 1
sctp_ifa 8 1K 8
sctp_atcl 2 1K 86
clone 8 1K 8
vnodemarker 2 1K 8
NFSD session 1 1K 1
CAM periph 4 1K 270
in_multi 3 1K 4
toponodes 6 1K 6
isadev 6 1K 6
mount 16 1K 86
pci_link 10 1K 10
CAM SIM 2 1K 2
softdep 1 1K 1
pfil 4 1K 4
chacha20random 1 1K 1
epoch 4 1K 4
cdev 2 1K 2
newdirblk 7 1K 53
encap_export_host 8 1K 8
mld 3 1K 3
sctp_ifn 3 1K 3
igmp 3 1K 3
tun 4 1K 4
osd 3 1K 9
DEVFSP 5 1K 5
freework 2 1K 68
freeblks 1 1K 67
vnodes 1 1K 1
NFSD lckfile 1 1K 1
NFSD V4client 1 1K 1
DEVFS 9 1K 10
inpcbpolicy 7 1K 145
feeder 7 1K 7
loginclass 3 1K 3
CAM path 4 1K 1030
apmdev 1 1K 1
atkbddev 2 1K 2
pmchooks 1 1K 1
prison 4 1K 4
filecaps 5 1K 72
CAM dev queue 2 1K 2
CAM I/O Scheduler 1 1K 1
soname 4 1K 5765
nexusdev 5 1K 5
entropy 2 1K 38
tcpfunc 1 1K 1
sctp_vrf 1 1K 1
sctp_atky 2 1K 86
vnet 1 1K 1
acpiintr 1 1K 1
pmc 1 1K 1
cpus 2 1K 2
sctp_athm 2 1K 86
vnet_data_free 1 1K 1
Per-cpu 1 1K 1
p1003.1b 1 1K 1
CAM CCB 0 0K 1770
madt_table 0 0K 2
PUC 0 0K 0
ppbusdev 0 0K 0
agtiapi_MemAlloc malloc 0 0K 0
osti_cacheable 0 0K 0
tempbuff 0 0K 0
tempbuff 0 0K 0
pvscsi 0 0K 0
smartpqi 0 0K 0
ag_tgt_map_t malloc 0 0K 0
ag_slr_map_t malloc 0 0K 0
lDevFlags * malloc 0 0K 0
tiDeviceHandle_t * malloc 0 0K 0
ag_portal_data_t malloc 0 0K 0
ag_device_t malloc 0 0K 0
STLock malloc 0 0K 0
CCB List 0 0K 0
iavf 0 0K 0
ixl 0 0K 0
sr_iov 0 0K 0
OCS 0 0K 0
OCS 0 0K 0
nvme 0 0K 0
nvd 0 0K 0
netmap 0 0K 0
mwldev 0 0K 0
MVS driver 0 0K 0
fpukern_ctx 0 0K 0
xen_intr 0 0K 0
CAM ccb queue 0 0K 0
xen_hvm 0 0K 0
legacydrv 0 0K 0
qpidrv 0 0K 0
mrsasbuf 0 0K 0
mpt_user 0 0K 0
dmar_idpgtbl 0 0K 0
dmar_dom 0 0K 0
dmar_ctx 0 0K 0
dmar_dmamap 0 0K 0
mps_user 0 0K 0
MPSSAS 0 0K 0
isci 0 0K 0
bxe_ilt 0 0K 0
xenbus 0 0K 0
vm_fictitious 0 0K 0
mps 0 0K 0
mpr_user 0 0K 0
MPRSAS 0 0K 0
UMAHash 0 0K 0
vm_pgdata 0 0K 0
jblocks 0 0K 0
savedino 0 0K 14
sentinel 0 0K 0
jfsync 0 0K 0
jtrunc 0 0K 0
sbdep 0 0K 2
jsegdep 0 0K 0
jseg 0 0K 0
jfreefrag 0 0K 0
jfreeblk 0 0K 0
jnewblk 0 0K 0
jmvref 0 0K 0
jremref 0 0K 0
jaddref 0 0K 0
freedep 0 0K 0
freefrag 0 0K 5
allocindir 0 0K 0
allocdirect 0 0K 0
ufs_trim 0 0K 0
mactemp 0 0K 0
audit_trigger 0 0K 0
audit_pipe_presel 0 0K 0
audit_pipeent 0 0K 0
audit_pipe 0 0K 0
audit_evname 0 0K 0
audit_bsm 0 0K 0
audit_gidset 0 0K 0
audit_text 0 0K 0
audit_path 0 0K 0
audit_data 0 0K 0
audit_cred 0 0K 0
xform 0 0K 0
NLM 0 0K 0
nfsclient_nlminfo 0 0K 0
nfsclient_lock 0 0K 0
NFS FHA 0 0K 0
ipsec-spdcache 0 0K 0
ipsec-reg 0 0K 0
ipsec-misc 0 0K 0
ipsecrequest 0 0K 0
ip6opt 0 0K 3
ip6_msource 0 0K 0
ip6_moptions 0 0K 0
in6_mfilter 0 0K 0
frag6 0 0K 0
tcplog 0 0K 0
LRO 0 0K 0
sctp_mcore 0 0K 0
sctp_socko 0 0K 0
sctp_iter 0 0K 5
sctp_mvrf 0 0K 0
sctp_timw 0 0K 0
sctp_cpal 0 0K 0
sctp_cmsg 0 0K 0
sctp_stre 0 0K 0
sctp_athi 0 0K 0
sctp_a_it 0 0K 5
sctp_aadr 0 0K 0
sctp_stro 0 0K 0
sctp_stri 0 0K 0
sctp_map 0 0K 0
newreno data 0 0K 0
ip_msource 0 0K 0
ip_moptions 0 0K 0
in_mfilter 0 0K 0
ipid 0 0K 0
80211scan 0 0K 0
80211ratectl 0 0K 0
80211power 0 0K 0
80211nodeie 0 0K 0
80211node 0 0K 0
80211mesh_gt 0 0K 0
80211mesh_rt 0 0K 0
80211perr 0 0K 0
80211prep 0 0K 0
80211preq 0 0K 0
80211dfs 0 0K 0
80211crypto 0 0K 0
80211vap 0 0K 0
iflib 0 0K 0
vlan 0 0K 0
gif 0 0K 0
ifdescr 0 0K 0
zlib 0 0K 0
fadvise 0 0K 0
mpr 0 0K 0
statfs 0 0K 237
export_host 0 0K 0
cl_savebuf 0 0K 2
biobuf 0 0K 0
aios 0 0K 0
lio 0 0K 0
acl 0 0K 0
mfibuf 0 0K 0
mbuf_tag 0 0K 48
accf 0 0K 0
pts 0 0K 0
iov 0 0K 13444
ioctlops 0 0K 91
Witness 0 0K 0
stack 0 0K 0
md_sectors 0 0K 0
sbuf 0 0K 364
md_disk 0 0K 0
compressor 0 0K 0
malodev 0 0K 0
SWAP 0 0K 0
LED 0 0K 0
sysctltmp 0 0K 589
sysctl 0 0K 1
ekcd 0 0K 0
dumper 0 0K 0
rctl 0 0K 0
ix_sriov 0 0K 0
aacraidcam 0 0K 0
ix 0 0K 0
ipsbuf 0 0K 0
iirbuf 0 0K 0
cache 0 0K 0
aacraid_buf 0 0K 0
kcovinfo 0 0K 0
prison_racct 0 0K 0
Fail Points 0 0K 0
sigio 0 0K 1
filedesc_to_leader 0 0K 0
tty console 0 0K 0
aaccam 0 0K 0
aacbuf 0 0K 0
zstd 0 0K 0
nvlist 0 0K 0
SCSI ENC 0 0K 0
SCSI sa 0 0K 0
isofs_node 0 0K 0
isofs_mount 0 0K 0
tr_raid5_data 0 0K 0
tr_raid1e_data 0 0K 0
tr_raid1_data 0 0K 0
tr_raid0_data 0 0K 0
tr_concat_data 0 0K 0
md_sii_data 0 0K 0
md_promise_data 0 0K 0
md_nvidia_data 0 0K 0
md_jmicron_data 0 0K 0
md_intel_data 0 0K 0
md_ddf_data 0 0K 0
raid_data 0 0K 72
geom_flashmap 0 0K 0
newnfsmnt 0 0K 0
newnfsclient_req 0 0K 0
NFSCL layrecall 0 0K 0
NFSCL session 0 0K 0
NFSCL sockreq 0 0K 0
NFSCL devinfo 0 0K 0
NFSCL flayout 0 0K 0
NFSCL layout 0 0K 0
NFSD rollback 0 0K 0
NFSCL diroffdiroff 0 0K 0
NEWdirectio 0 0K 0
NEWNFSnode 0 0K 0
NFSCL lck 0 0K 0
NFSCL lckown 0 0K 0
NFSCL client 0 0K 0
NFSCL deleg 0 0K 0
NFSCL open 0 0K 0
NFSCL owner 0 0K 0
NFS fh 0 0K 0
NFS req 0 0K 0
NFSD usrgroup 0 0K 0
NFSD string 0 0K 0
NFSD V4lock 0 0K 0
NFSD V4state 0 0K 0
NFSD srvcache 0 0K 0
msdosfs_fat 0 0K 0
msdosfs_mount 0 0K 0
msdosfs_node 0 0K 0
DEVFS4 0 0K 0
DEVFS2 0 0K 0
gntdev 0 0K 0
privcmd_dev 0 0K 0
evtchn_dev 0 0K 0
xenstore 0 0K 0
scsi_pass 0 0K 0
ciss_data 0 0K 0
xnb 0 0K 0
xbbd 0 0K 0
xbd 0 0K 0
Balloon 0 0K 0
sysmouse 0 0K 0
vtfont 0 0K 0
ath_hal 0 0K 0
athdev 0 0K 0
ata_pci 0 0K 0
ata_dma 0 0K 0
ata_generic 0 0K 0
amr 0 0K 0
scsi_da 0 0K 69
ata_da 0 0K 0
scsi_ch 0 0K 0
scsi_cd 0 0K 0
USBdev 0 0K 0
USB 0 0K 0
AHCI driver 0 0K 0
agp 0 0K 0
nvme_da 0 0K 0
acpipwr 0 0K 0
twsbuf 0 0K 0
twe_commands 0 0K 0
twa_commands 0 0K 0
tcp_log_dev 0 0K 0
midi buffers 0 0K 0
mixer 0 0K 0
ac97 0 0K 0
hdacc 0 0K 0
hdac 0 0K 0
hdaa 0 0K 0
acpi_perf 0 0K 0
acpicmbat 0 0K 0
SIIS driver 0 0K 0
db> show ktr
No such command; use "help" to list available commands